基体树脂和纳米颗粒含量对自润滑衬垫摩擦磨损性能的影响

摘要

用浸渍方法制备了含有不同比例基体树脂的Kevlar/聚四氟乙烯纤维(PTFE)织物型自润滑衬垫,用MM-200磨损试验机试验评价了制备衬垫的摩擦磨损性能,通过扫描电子显微镜(SEM)对磨损表面观测,探讨了衬垫中基体树脂含量和添加的纳米颗粒对衬垫摩擦磨损性能的影响机理.研究结果表明:衬垫存在一个较优的基体树脂含量范围,在此范围内,衬垫的摩擦磨损性能较为优异;纳米颗粒对衬垫的摩擦学性能和摩擦过程的阶段性变化产生影响,加入纳米颗粒后衬垫的抗磨性能得到明显改善.%The hybrid Kevlar/PTFE (polytetrafluroethylene) fabric self- lubricating liners with varying content of matrix resin are prepared by impregnating of Kevlar/PTFE fabric in phenolic resin containing nano - addtives and the successive curing.These prepared self- lubricating liners are evaluated on MM -200 friction and wear tester, the scanning electron microscope (SEM) is utilized to observe the morphologies of worn surfaces of the fabric liner, and the influences of the content of the matrix resin and nano - additives on the tribologieal performance of the self - lubricating liner are discussed.The results show that a perfect performance of the self - lubricating liner can be obtained in a definite range of the content of the matrix resin in the liner.The effect of the nano - additives on the worn surface of the liner leads to the improvement of the performance of the liner and the variation of friction properties of the liner.